Compare the kinetic energy of a 20,000-kg truck moving at 110 km/h with that of an 80.0-kg astronaut in orbit moving at 27,500 km/h

Kinetic energy is the energy that is possessed by an object that is moving. It is calculated by one-half the product of the mass and the square of the velocity of the object. We calculate as follows:

For the truck,

KE = mv^2 / 2

KE = 20000 kg (110 km/h (1 h/3600 s) (1000 m / 1 km)) ^2 / 2

KE = 611111.11 J

For the astronaut,

KE = 80.0 kg (27500 km/h (1 h/3600 s) (1000 m / 1 km)) ^2/2

KE = 611111.11 J

The kinetic energy possessed by the two bodies are the same.